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V2 ARCADIS <br /> Infrastructure Water.Environment Buildings RECEIVED ARCADIS U.S.,Inc. <br /> ' 1410 Rocky Ridge Drive <br /> NOV 21 2012 Suite 330 <br /> Ms. Amy S. Terrell Roseville <br /> Private Sites Cleanup Unit California 95661 <br /> Central Valley Regional Water QualityControl Board ENVIRONMENTAL HEALTH Tel 916 786 0320 <br /> 11020 Sun Center Drive#200 PERMIT/SERVICES Fax 916 786 0366 <br /> Rancho Cordova, CA 95670-6114 w .amadls-us.eom <br /> ' Subject: ENVIRONMENT <br /> Well Destruction Summary Report <br /> Tracy, CA—Maintenance Facility <br /> Dear Ms. Terrell: <br /> Date: <br /> ' ARCADIS U.S., Inc. (ARCADIS) has prepared this Well Destruction Summary Report November 14, 2012 <br /> on behalf of the Union Pacific Railroad Company(UPRR)regarding the former Tracy Contact: <br /> ' Maintenance Facility located at 720 East 6th Street in Tracy, California(the Site; James Eisert <br /> Figures 1 and 2). <br /> Phone: <br /> Background 916.786.1871 <br /> Email: <br /> ARCADIS supervised the destruction of 71 wells between November 15 and James.Eisert@ <br /> ' December 8, 2011 as summarized in the Well Destruction SummaryReport, arcadis-us.com <br /> prepared by ARCADIS and dated January 23, 2012 (Summary Report). The 71 wells <br /> were destroyed in accordance with the Well Destruction Work Plan, prepared by our ref: <br /> ' ARCADIS and dated October 6, 2011 (the Work Plan). The Work Plan was approved RC000709.0003 <br /> by the California Regional Water Quality Control Board (RWQCB) in a letter to UPRR <br /> dated November 7, 2011. <br /> ' Note that the Work Plan proposed to destroy 86 wells; however, one additional well <br /> (SVE-1)was discovered during the 2011 well destruction activities making a new <br /> ' total of 87 proposed for destruction. SVE-1 was added to the list of wells for <br /> destruction following e-mail approval from the California Regional Water Quality <br /> Control Board (RWQCB) on December 8, 2011. Also note, as described in the <br /> Summary Report, well MWA 7B could not be located (after multiple attempts with a <br /> variety of technologies)and therefore was not destroyed. <br /> ' This summary report describes the destruction of 15 groundwater wells (consisting of <br /> five off-site monitoring and ten on-site injection wells)that were not destroyed during <br /> the previous field event. The 15 wells were destroyed during the week of October 15, <br /> 2012 in accordance with the Work Plan which results in a total of 86 wells being <br /> destroyed and one well that could not be located (MW-17B). <br /> 1 <br /> Imagine the result <br /> ' tmry maint_wall destruct rpt(11-14A 2).doc <br />